Global Patent Index - EP 0485993 A1

EP 0485993 A1 19920520 - Waveguide-type optical device.

Title (en)

Waveguide-type optical device.

Title (de)

Optische Vorrichtung vom Wellenleitertyp.

Title (fr)

Dispositif optique de type guide d'ondes.

Publication

EP 0485993 A1 19920520 (EN)

Application

EP 91119362 A 19911113

Priority

JP 30811590 A 19901114

Abstract (en)

A waveguide-type optical device of the invention has a dielectric substrate (34), wave-guiding paths (36,38) formed in the dielectric substrate, a buffer layer (46) provided on the substrate (34), a semiconducting layer (48) formed on the buffer layer (46) and electrodes (40,42) arranged on the semiconducting layer (48) to produce an operation-controlling electric field for the wave-guiding paths (36,38). Carrier capture layers (44,50) having traps are formed in the buffer layer (46) in the proximity of the electrodes (40,42), respectively. <IMAGE>

IPC 1-7

G02F 1/035

IPC 8 full level

G02B 6/12 (2006.01); G02F 1/035 (2006.01); G02F 1/313 (2006.01)

CPC (source: EP US)

G02F 1/035 (2013.01 - EP US); G02F 1/3132 (2013.01 - EP US); G02F 2203/21 (2013.01 - EP US)

Citation (search report)

  • [X] PROC. 5TH EUROPEAN CONF. ON INTEGRATED OPTICS 26-28 APRIL 1989, PARIS, FRANCE pages 135 - 137; J.MAEHNSS ET AL.: 'Efficient optical phase modulator integrated with an inverted rib waveguide'
  • [Y] APPLIED PHYSICS LETTERS. vol. 45, no. 8, 15 October 1984, NEW YORK US pages 840 - 842; P.R.ASHLEY ET AL.: 'Improved mode extinction modulator using a Ti in-diffused LiNbO3 channel waveguide'
  • [X] PATENT ABSTRACTS OF JAPAN vol. 9, no. 40 (P-336)(1763) 20 February 1985 & JP-A-59 181 318 ( FUJITSU ) 15 October 1984
  • [A] PATENT ABSTRACTS OF JAPAN vol. 9, no. 122 (P-359)(1845) 28 May 1985 & JP-A-60 008 824 ( FUJITSU ) 17 January 1985
  • [A] JAPANESE JOURNAL OF APPLIED PHYSICS. vol. 20, no. 4, April 1981, TOKYO JP pages 733 - 737; S.YAMADA ET AL.: 'DC drift phenomena in LiNbO3 optical waveguide devices'
  • [AD] APPLIED PHYSICS LETTERS. vol. 47, no. 3, 1 January 1985, NEW YORK US pages 211 - 213; C.M.GEE ET AL.: 'Minimizing DC drift in LiNbO3 waveguide devices'

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0485993 A1 19920520; EP 0485993 B1 19970423; DE 69125790 D1 19970528; DE 69125790 T2 19971218; JP H04179931 A 19920626; US 5153934 A 19921006

DOCDB simple family (application)

EP 91119362 A 19911113; DE 69125790 T 19911113; JP 30811590 A 19901114; US 79116591 A 19911113